twintails

Here is alternate skin hairs for D.Va (Black Cat/Officer/Academy/Junker/Nano)
Most of the recolors or slight edits are based on @D-Oxygen D.Va Static hair
For the rest of the hairs I used the color scheme set by @D-Oxygen for consistency
D.Va Officer
D.Va Default (No headphones; I couldn't...

BIG UPDATE:
Here is alternate skin hairs for Mercy (Sigrun/Pink/Medic/Fairy/Winged/Devil)
Most of the recolors or slight edits are based on @Teadium Mercy Static hair
For the rest of the hairs I used the color scheme set by @Teadium for consistency
but I personally adjust it a little to be...

RGB Adjustable Pigtails Dynamic
Use Headwear slot 1 and 2.
I found the Guide here, Thank You for all the hard work that went into figuring out this and sharing it with us.
Updated Link
How to merge RGB sliders or affect them to another layer, even hair
More pics here
Loader Imports ds14048